Because different isotopes of the same element haves different number of neutrons, each of these isotopes will have a different mass number (A), which is the sum of the number of protons and the number of neutrons in the nucleus of an atom. Therefore, there are 35 neutrons in this isotope of zinc (Zn). For example, at over 1.91019 years, over a billion times longer than the current estimated age of the universe, bismuth-209 has the longest known alpha decay half-life of any naturally occurring element. 238 = 92 + # of Neutrons The three remaining undiscovered regularly occurring stable natural elements: The three incidentally occurring natural elements (, Four scarce decay products of uranium or thorium (, '[97]', [] notation: massnumber of most stable isotope, This page was last edited on 1 July 2023, at 12:29. A Lewis electron dot symbol (or electron dot diagram or a Lewis diagram or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. The elements studied to date as solid samples have eight kinds of crystal structures: cubic, body-centered cubic, face-centered cubic, hexagonal, monoclinic, orthorhombic, rhombohedral, and tetragonal. How many atoms are represented by the symbol Na? - Brainly.in Elements are represented by an atomic symbol. Of these 11 transient elements, 5 (polonium, radon, radium, actinium, and protactinium) are relatively common decay products of thorium and uranium. Certain elements have no stable isotopes and are composed only of radioactive isotopes: specifically the elements without any stable isotopes are technetium (atomic number 43), promethium (atomic number 61), and all observed elements with atomic numbers greater than 82. Hydrogen atoms all have one electron occupying the space outside of the nucleus. How many atoms are in the observable universe? | Live Science A chemical element is a chemical substance that cannot be broken down into other substances. Mendeleev, the first to arrange the elements in a periodic manner. In total, 252 stable isotopes have been isolated for 80 different elements. At least two additional, two-letter generic chemical symbols are also in informal usage, "Ln" for any lanthanide element and "An" for any actinide element. 186 - 74 = # of Neutrons. It is important to note that a subscript following a symbol and a number in front of a symbol do not represent the same thing; for example, H 2 and 2H represent distinctly different species. [24] Nearby galaxies that have evolved along similar lines have a corresponding enrichment of elements heavier than hydrogen and helium. The version of this classification used in the periodic tables presented here includes: actinides, alkali metals, alkaline earth metals, halogens, lanthanides, transition metals, post-transition metals, metalloids, reactive nonmetals, and noble gases. Chemists and nuclear scientists have different definitions of a pure element. For some of the synthetically produced transuranic elements, available samples have been too small to determine crystal structures. The first of these symbols were intended to be fully universal. 2.4 Chemical Formulas - Chemistry 2e | OpenStax In general, the mass number of a given nuclide differs in value slightly from its atomic mass, since the mass of each proton and neutron is not exactly 1u; since the electrons contribute a lesser share to the atomic mass as neutron number exceeds proton number; and (finally) because of the nuclear binding energy. 1. The isotope inExample \(\PageIndex{2}\)has an atomic number of 74, a mass number of 186, and is symbolized as W. When this information is incorporated into this notation,the nuclear symbol shown below results. The number of neutrons in the isotope can again be calculated from . In this system, the alkali metals, alkaline earth metals, and transition metals, as well as the lanthanides and the actinides, are special groups of the metals viewed in a broader sense. Thus, the symbols for californium and einsteinium are Cf and Es. Since atoms are neutral, the number of electrons in an atom is equal to the number of protons. In thermochemistry, an element is defined to have an enthalpy of formation of zero in its reference state. These elements originally referred to earth, water, air and fire rather than the chemical elements of modern science. One of the most convenient, and certainly the most traditional presentation of the elements, is in the form of the periodic table, which groups together elements with similar chemical properties (and usually also similar electronic structures). At over 1.91019 years, over a billion times longer than the current estimated age of the universe, bismuth-209 (atomic number 83) has the longest known alpha decay half-life of any naturally occurring element, and is almost always considered on par with the 80 stable elements. The abundance of the chemical elements on Earth varies from air to crust to ocean, and in various types of life. As they were identified as elements, the existing names for anciently known elements (e.g., gold, mercury, iron) were kept in most countries. In fact, the number of neutrons present in an element can vary from atom to atom. When using this notation, the name of the element must be used to find its atomic number. The light elements lithium, beryllium and boron are produced mostly through cosmic ray spallation (fragmentation induced by cosmic rays) of carbon, nitrogen, and oxygen. Explanation: In one formula unit of N a3P O4, clearly there are 3 sodium atoms, 1 phosphorus atom, and 4 oxygen atoms. As stated in the previous section, the number of valence electrons present in an atom dictates the reactivity of that element. Chemical symbols are understood internationally when element names might require translation. If an element has isotopes that are not radioactive, these are termed "stable" isotopes. Similarly, the British discoverer of niobium originally named it columbium, in reference to the New World. Three of these elements, bismuth (element 83), thorium (element 90), and uranium (element 92) have one or more isotopes with half-lives long enough to survive as remnants of the explosive stellar nucleosynthesis that produced the heavy elements before the formation of the Solar System. The periodic table is the tabular arrangement of all the chemical elements on the basis of their respective atomic numbers. Even smaller amounts of boron may have been produced in the Big Bang, since it has been observed in some very old stars, while carbon has not. The nuclides of stable and radioactive elements are also available as a list of nuclides, sorted by length of half-life for those that are unstable. The table has also found wide application in physics, geology, biology, materials science, engineering, agriculture, medicine, nutrition, environmental health, and astronomy. An atom is the smallest part of an element that can exist. Nearly all other naturally occurring elements occur in the Earth as compounds or mixtures. Plato believed the elements introduced a century earlier by Empedocles were composed of small polyhedral forms: tetrahedron (fire), octahedron (air), icosahedron (water), and cube (earth).[28][29]. The reference state of an element is defined by convention, usually as the thermodynamically most stable allotrope and physical state at a pressure of 1 bar and a given temperature (typically at 298.15K). 238 - 92 = # of Neutrons, Mass Number = # of Protons + # of Neutrons Sodium is important for many different functions of the human body. Mass Number = # of Protons + # of Neutrons 65 - 30 = # of Neutrons. Since several elements are gases at commonly encountered temperatures, their densities are usually stated for their gaseous forms; when liquefied or solidified, the gaseous elements have densities similar to those of the other elements. H 2 is a molecular formula; it represents a diatomic molecule of hydrogen, consisting of two atoms of the element that are chemically bonded together. Later chemical elements were also assigned unique chemical symbols, based on the name of the element, but not necessarily in English. How Many Atoms Exist in the Universe? - ThoughtCo Three isotopes of hydrogen are modeled in Figure \(\PageIndex{1}\). For example, the relative atomic mass of chlorine is 35.453u, which differs greatly from a whole number as it is an average of about 76% chlorine-35 and 24% chlorine-37. The final subatomic particle was not discovered until 1932. 3.4: Atomic Mass and Atomic Number - Chemistry LibreTexts Since the mass number was provided, this equation can be rearranged to determine the number of neutrons contained in this specific isotope of tungsten. The periodic table lists the elements in order of increasing atomic number. A weighted average takes into account not only the mass numberof each isotope, but also how prevalent, or common, that isotope is in nature, relative to each of that element's other isotopes. The number of neutrons in the isotope can again be calculated from its mass number, which is the numerical value written after the dash in both representations shown in Figure \(\PageIndex{2}\). It is important to note the differencebetween an isotope and an elemental symbolism. "Rg" was formerly used for any rare gas element, but the group of rare gases has now been renamed noble gases and the symbol "Rg" has now been assigned to the element roentgenium. Answers. The concept of an "element" as an undivisible substance has developed through three major historical phases: Classical definitions (such as those of the ancient Greeks), chemical definitions, and atomic definitions. For a few illustrative examples: German speakers use "Wasserstoff" (water substance) for "hydrogen", "Sauerstoff" (acid substance) for "oxygen" and "Stickstoff" (smothering substance) for "nitrogen", while English and some romance languages use "sodium" for "natrium" and "potassium" for "kalium", and the French, Italians, Greeks, Portuguese and Poles prefer "azote/azot/azoto" (from roots meaning "no life") for "nitrogen". The number of protons found within an atom defines the identity of that atom, and all of an atom's protons collectively attract the surrounding electrons, keeping the latter bound tothe atom. Numberof electrons contained in the atom, The atomic number of an element is found above the elemental symbol within a box on the periodic table. Air is primarily a mixture of the elements nitrogen, oxygen, and argon, though it does contain compounds including carbon dioxide and water. The 1913 discovery by English physicist Henry Moseley that the nuclear charge is the physical basis for an atom's atomic number, further refined when the nature of protons and neutrons became appreciated, eventually led to the current definition of an element based on atomic number (number of protons per atomic nucleus). These 94 elements have been detected in the universe at large, in the spectra of stars and also supernovae, where short-lived radioactive elements are newly being made. The ratio of atoms is 2:4:2. The radioisotopes typically decay into other elements upon radiating an alpha or beta particle. An element's or isotope's atomic number tells how many protons are in its atoms. Although earlier precursors to this presentation exist, its invention is generally credited to the Russian chemist Dmitri Mendeleev in 1869, who intended the table to illustrate recurring trends in the properties of the elements. However it is not isotopically pure since ordinary copper consists of two stable isotopes, 69% 63Cu and 31% 65Cu, with different numbers of neutrons. Almost all other elements found in nature were made by various natural methods of nucleosynthesis. This is in contrast to chemical compounds and mixtures, which contain atoms with more than one atomic number. (See element naming controversy). Nuclear fusion inside stars produces elements through stellar nucleosynthesis, including all elements from carbon to iron in atomic number. Since sodium (Na) has an atomic number of 11, this isotope contains 11 protons and 11 electrons. Some of these elements, notably bismuth (atomic number 83), thorium (atomic number 90), and uranium (atomic number 92), have one or more isotopes with half-lives long enough to survive as remnants of the explosive stellar nucleosynthesis that produced the heavy metals before the formation of our Solar System. Every atom of carbon,C,that exists in the known universe isdefinedto contain 6 protons, because its atomic number is 6, and must also contain 6 electrons, in order for the atom to maintain an overall net neutral charge. CH104: Chapter 3 - Ions and Ionic Compounds - Chemistry The current standard table contains 118 confirmed elements as of 2021. 25 - 11 = # of Neutrons. Write the nuclear symbol of the isotope that is described in Example \(\PageIndex{2}\). Chemical element - Wikipedia The same applies to "Fe" (ferrum) for iron, "Hg" (hydrargyrum) for mercury, "Sn" (stannum) for tin, "Au" (aurum) for gold, "Ag" (argentum) for silver, "Pb" (plumbum) for lead, "Cu" (cuprum) for copper, and "Sb" (stibium) for antimony. Atoms of chemically pure elements may bond to each other chemically in more than one way, allowing the pure element to exist in multiple chemical structures (spatial arrangements of atoms), known as allotropes, which differ in their properties. The number of dots equals the number of valence electrons in the atom. Each subatomic particle exists to serve a specific purpose. Figure 3.4.1 3.4. Mass Number = # of Protons + # of Neutrons. Element List - Atomic Number, Element Name and Symbol - ThoughtCo Very abundant hydrogen and helium are products of the Big Bang, but the next three elements are rare since they had little time to form in the Big Bang and are not made in stars (they are, however, produced in small quantities by the breakup of heavier elements in interstellar dust, as a result of impact by cosmic rays). The Lanthanide and Actinide Metals", https://en.wikipedia.org/w/index.php?title=Chemical_element&oldid=1162845220, Short description is different from Wikidata, Wikipedia indefinitely semi-protected pages, Articles needing additional references from April 2021, All articles needing additional references, Articles containing potentially dated statements from 2021, All articles containing potentially dated statements, Creative Commons Attribution-ShareAlike License 4.0, English word, from the same root as 'yellow', title="Top, WP:1.0" style="text-align:center; color:; background-color:#ff00ff; border:none;;"|, title="High, WP:1.0" style="text-align:center; color:; background-color:#ff88ff; border:none;;"|, title="Mid, WP:1.0" style="text-align:center; color:; background-color:#ffbbff; border:none;;"|, title="Low, WP:1.0" style="text-align:center; color:; background-color:#ffddff; border:none;;"|, title="H , hydrogen " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 1, title="He, helium " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 2, title="Li, lithium " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 3, title="Be, beryllium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 4, title="B , boron " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 5, title="C , carbon " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 6, title="N , nitrogen " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 7, title="O , oxygen " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 8, title="F , fluorine " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 9, title="Ne, neon " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 10, title="Na, sodium " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 11, title="Mg, magnesium " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 12, title="Al, aluminium " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 13, title="Si, silicon " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 14, title="P , phosphorus" style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 15, title="S , sulfur " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 16, title="Cl, chlorine " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 17, title="Ar, argon " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 18, title="K , potassium " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 19, title="Ca, calcium " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 20, title="Sc, scandium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 21, title="Ti, titanium " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 22, title="V , vanadium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 23, title="Cr, chromium " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 24, title="Mn, manganese " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 25, title="Fe, iron " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 26, title="Co, cobalt " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 27, title="Ni, nickel " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 28, title="Cu, copper " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 29, title="Zn, zinc " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 30, title="Ga, gallium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 31, title="Ge, germanium " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 32, title="As, arsenic " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 33, title="Se, selenium " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 34, title="Br, bromine " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 35, title="Kr, krypton " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 36, title="Rb, rubidium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 37, title="Sr, strontium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 38, title="Y , yttrium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 39, title="Zr, zirconium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 40, title="Nb, niobium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 41, title="Mo, molybdenum" style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 42, title="Tc, technetium" style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 43, title="Ru, ruthenium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 44, title="Rh, rhodium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 45, title="Pd, palladium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 46, title="Ag, silver " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 47, title="Cd, cadmium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 48, title="In, indium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 49, title="Sn, tin " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 50, title="Sb, antimony " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 51, title="Te, tellurium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 52, title="I , iodine " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 53, title="Xe, xenon " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 54, title="Cs, caesium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 55, title="Ba, barium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 56, title=" , " style="text-align:center; color:; background-color:#f8f8f8; border:#f8f8f8;;"| *, title="Lu, lutetium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 71, title="Hf, hafnium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 72, title="Ta, tantalum " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 73, title="W , tungsten " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 74, title="Re, rhenium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 75, title="Os, osmium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 76, title="Ir, iridium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 77, title="Pt, platinum " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 78, title="Au, gold " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 79, title="Hg, mercury " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 80, title="Tl, thallium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 81, title="Pb, lead " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 82, title="Bi, bismuth " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 83, title="Po, polonium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 84, title="At, astatine " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 85, title="Rn, radon " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 86, title="Fr, francium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 87, title="Ra, radium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 88, title=" , " style="text-align:center; color:; background-color:#f8f8f8; border:#f8f8f8;;"| **, title="Lr, lawrencium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 103, title="Rf, rutherfordium" style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 104, title="Db, dubnium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 105, title="Sg, seaborgium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 106, title="Bh, bohrium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 107, title="Hs, hassium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 108, title="Mt, meitnerium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 109, title="Ds, darmstadtium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 110, title="Rg, roentgenium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 111, title="Cn, copernicium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 112, title="Nh, nihonium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 113, title="Fl, flerovium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 114, title="Mc, moscovium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 115, title="Lv, livermorium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 116, title="Ts, tennessine " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 117, title="Og, oganesson " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 118, title="Uue, ununennium" style="text-align:center; color:; background-color:#ffddff; border:none;;"| 119, title="Ubn, unbinilium" style="text-align:center; color:; background-color:#ffddff; border:none;;"| 120, title=" , " style="text-align:center; color:; background-color:#f8f8f8; border:#f8f8f8;;"| ***, title="La, lanthanum " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 57, title="Ce, cerium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 58, title="Pr, praseodymium" style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 59, title="Nd, neodymium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 60, title="Pm, promethium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 61, title="Sm, samarium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 62, title="Eu, europium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 63, title="Gd, gadolinium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 64, title="Tb, terbium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 65, title="Dy, dysprosium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 66, title="Ho, holmium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 67, title="Er, erbium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 68, title="Tm, thulium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 69, title="Yb, ytterbium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 70, title="Ac, actinium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 89, title="Th, thorium " style="text-align:center; color:; background-color:#ff88ff; border:none;;"| 90, title="Pa, protactinium" style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 91, title="U , uranium " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 92, title="Np, neptunium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 93, title="Pu, plutonium " style="text-align:center; color:; background-color:#ff00ff; border:none;;"| 94, title="Am, americium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 95, title="Cm, curium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 96, title="Bk, berkelium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 97, title="Cf, californium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 98, title="Es, einsteinium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 99, title="Fm, fermium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 100, title="Md, mendelevium" style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 101, title="No, nobelium " style="text-align:center; color:; background-color:#ffbbff; border:none;;"| 102, title="Ubu, unbiunium " style="text-align:center; color:; background-color:#ffddff; border:none;;"| 121, title="Ubb, unbibium " style="text-align:center; color:; background-color:#ffddff; border:none;;"| 122, title="Ubq, unbiquadium " style="text-align:center; color:; background-color:#ffddff; border:none;;"| 124, title="Ubh, unbihexium " style="text-align:center; color:; background-color:#ffddff; border:none;;"| 126.